Storage-battery plate.



No. 888,951. PATENTED MAY 26, 1908. T. A. WILLARD.

STORAGE BATTERY PLATE. APPLICATION FILED MAR 29, 1907.

UNITED STATES PATENT OFFICE.

THEODORE A. WILLARD, OF CLEVELAND, OHIO, ASSIGNOR TO WILLARD STORAGEBATTERY COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF WEST VIRGINIA.

STORAGE-BATTERY PLATE.

Specification of Letters Patent.

Patented May 26, 1908.

To all whom it may concern.

Be it known that I, THEODORE A. W1L-' LARD, a citizen of the UnitedStates, residin at Cleveland, in the county of Ouyahoga an State ofOhio, have invented a certain newand useful Storage-Battery Plate, ofwhich the following is a s ecification.

- The principal ob ect of the present invention is to prevent increaseof the overall length of a one-piece plate such as is brought about bythe rowth or expansion due to the formation and use of the plate.

Another'object of the invention is toprolon the useful life of theplate.

. transverse sectional view taken on the line 2-2, of Fig. 1.

.The plate consists of a blank all of which is of like metal, or inother words, of a onepiece blank. Upon the opposite faces of the lankthere are rows or stripes 1, of ribs with flat spaces or stripes 2,between them. The ribs are shown to project outward beyond the flat arts2. -3 are holes or openings arranged m the stripes or rows of projectingribs and they extend clear through the late. As shown they are of ovalform arranged with their longest axes crosswise of the rows of ribs andthe openings in one row or stripe of ribs are arranged out of line withthe openin s in the adjacent stripe or row of ribs. In

.this way the plate is not weakened. The

openings 3, afford space which, by receiving a the growth of thematerial, prevents an increase of overall length of the plate, and theoppositel disposed sets of ribs are expanslvely ba anced or in otherwords on each side of the plate the correspondin sets of ribs are soconstructed and arrange that in use they expand or tend to grow equally.One, but not the only way of doing this is to make the ribs in each setidentical in cross section. Furthermore under these conditions thetendency of plates to buckle is obviated. The ribs and material in thestripes between the o enings may grow'endwise and more or less theopenings so that there are not created in the late undue strains whileat the same time t e overall length of the plate does not increase andit is not subject to buckling, bending and twisting. In consequence ofthis the useful life of the plate is materially increased.

What I claim is:

1. A battery plateconsisting of a one-piece blank having rows or stripesof projecting ribs alternatln with rows or stripes of flat spacesarrange on opposite faces of the plate and havin oval openings arrangedcrosswise of the ribbed stripes and out of alinement with each other,substantially as described.

2. An integral battery plate consisting of a blank having on itsopposite faces sets of projecting ribs alternating with unribbed spacesand the oppositely disposed sets of ribs being expansively balanced, andsaid.

plate having crosswise openin 's intermediately intercepting said ribs,substantially as described.

In testimony whereof I have hereunto signed my name in the presence oftwo witnesses.

THEODORE A. WILLARD.

.Witness'es W. J. JACKSON, K. M. GILLIGAN.

